Contractile spring device



I.. Y. WILLIAMS, DEC'D. M. S. DODD. ADMINISTRATOR. com/wmf spams uevlcs. APPLICATION FILED OCT. 2B. I-9I9. 1,353,881 PawntdSept. 28, 1920.

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UNITED STATES PATENT OFFICE.

LACEY Y. WILLIAMS, DECEASED, LATE GF TOLEDO, OHIO, BY MARTIN S. DODD, ADMINISTRATOR.

CONTRACTILE SPRING DEVICE.

Specicaton of Letters Patent.

Patented Sept. 2S, 1920.

Application led October 28, 1919. Serial No. 333,877.

To all whom it may concern.'

Be it known that LAGEY Y. WILLIAMS, deceased, late of Toledo, county of Lucas, State of Ohio, did invent a certain new and useful Improvement in Contractile Spring Devices, of which the following is a specification.

The object of the invention is the provision of a contractile spring device adapted for attachment to two separate elements, one of which has a sliding movement relative to the other, or each relative to the other, for holding said elements parallel and returning said element or elements to normal positions by the contractile energy of the spring when said elements have been moved and the spring expanded.

In practice the device is to be used in any combination where two elements are to be separated by a sliding movement or movements and automatically returned to their normal positions by the contractile energy of the spring.

The invention consists in certain novelties of construction and in the combination of parts as herein set forth and claimed.

The accompanying drawing illustrates one example of the application of the principle, the parts being constructed and combined according to the best mode of procedure so far devised for the generic purpose.

Figure l is a plan view of the spring device combined with two elements, one movable relative to the other, or each movable relative to the other, the said device being embedded within recesses formed in the elements and hidden from view and. protected from dust and dirt.

Fig. 2 is a side view of the spring device removed from the two elements.

Fig. 3 is an end view of Fig. 2.

Fig. 4 is a plan view of one of the metallic blanks from which the casing is fashioned.

Fig. 5 is a view of one part of the casing formed by bending the blank of Fig. 4 on the dotted lines a.

Fig. 6 shows the complemental metallic blank in plan view.

Fig. 7 is a view of the other part of the spring casing formed by bending the blank of Fig. 6 on the lines c.

Fig. 8 is a side view ofthe contractile Fig. 9 is a cross sectional view of Fig. l`

taken on line .ir-ar, the spring device being removed.

The blank A is cut to the shape shown having two slots l. and 2 and a lng 3, over which one loop 1J. of the spring C is passed and the lug then bent down at right angles when the parts are assembled. i

The blank A is bent on the lines fr to the shape shown by Fig. the two slots l and Q matching to nonstitute a single slot d and forming the inner hollow body 5 to receive the body of the spring, and the wing 6.

The blank B has a slot 7 and a lug 8, and is bent on the lines b to form the outer hollow body 9 or casing, the projecting edges l0 and the wing 11. The lug 8 receives the loop l2 of the spring and holds it when the lug is bent down.

The hollow part 5 obviously slides into the hollow part 9, which is of larger diameter, the spring within the part 5 has its opposite loops passed over the lugs 3 and 8 which are bent down and the ltwo parts of the casingl can be moved apart longitudinally tar as the spring can be expanded.

The spring device as described is shown combined with two separate elements D and E. one of which is movable relative to the other. Each element has a recess 13 in its edgebf the shape shown by dotted lilies, Fig. l, and by the cross-sectional view, Fig. 9. The device is less length than the lengths of the slots, and rivets 14. are passed through the elements and the holes l5 in the wings of the device to anchor the same in position.

Obviously one element, D or E, can be moved longitudinally relatively to the other, carrying with it one part of the spring casing and expanding the spring. When released, the contractile energy of the cX- loanded spring will restore the element to its normal position. Essential elements of the spring device are the two parts each having a hollow portion, one telescoping in the other, the spring within connected to Aopposite parts, and the projections or wings for attachment. When the two parts are arranged as shown the slots d and 7 are necessary to allow the ends of both parts to lie between parallel planes in compact relation.

What is claimed as new is:

1. A spring device comprising two ele- Inents each having a hollow part one telcscoping within the other, an expansible coil spring within the hollow parts having its opposite ends secured to the opposite hollow parts, and a projection or wing on each element said wings being located at opposite sides of the longitudinal axis or body of the spring for securing the device in operative position.

2. A spring device comprising two elements each having a hollow part one tel`e scoping within the other and each provided with a slot, an expansible coil spring within the hollow parts having its ends secured to the opposite hollow parts, and a projection or wing on each element for securing the device in operative position; the said slots being substantially in line, parallel with the length of the spring and at one side of the same.

3. A spring device comprising two elements, one Jformed by bending a blank having two slots to form a hollow portion at one edge, a wing, and a single slot formed by the registry of the two slots; the other formed by bending a blank having a slot and between the edges of the slot to form a hollow portion at one edge, a wing and an open slot; one of said elements telescoping within the other and united thereto by a coiled spring within the same having its opposite ends secured to the oppositely disposed elements.

4. A spring device comprising two elements each having a hollow part and a lug at 'the end, enetelescopieg` w'lghinlthe other; an expansible coilV sprmgwithin the hollow parts having its opposite ends secured to' the luge upon4 the oppcmite.` hollow parts, and means on each element at opposite sides of the longitudinal axis of the spring for anchoring the same.

5. The combination with two elements, one Slidable relative to the other, and` each provided with a recess in its edge, of a two part contractile device located within the recesses; and means for securing each of said parts to opposite elements.

6. The combination with two elements; one slidable relative to the other andl each provided with a recess in the edge, of* a two part rtelescopic contractile spring device within `the said recesses; and means'for securing each part to the oppositely disposed elements. l

7. The combination with two elements; one slidable relativevio the other and each provided with a recess in the edge, of a two part contractile spring device, each having a wing, said parts being located within the said recesses; and means for securing the wings to opposite elements.

8. The combination with two elements; one slidable` relative to the other and each provided* with a recess in its edge, of a two part contractile spring device, said parts loosely interlocking so one can move relative to the other andlsaid parts locatedwihin the said recesses; and means for securing the said parts respectively to the opposite elements.

MARTIN S. DODD, Administrator 'with the will unnamed of estate of Lacey Y. Williams, deceased. 

